Shield segment test device and test method

Abstract

The invention provides a shield segment test device. The shield segment test device comprises a foundation; a plurality of bearing platforms, wherein each bearing platform is movably arranged on the foundation; the multiple supporting systems are correspondingly arranged on the bearing platforms, and each supporting system comprises a supporting bed used for bearing shield segments; the slab staggering control system is used for controlling the lifting of each supporting system so as to realize the slab staggering between the shield segments borne by different supporting systems; the opening control system is used for controlling the bearing platform to move on the foundation so that the shield segments borne by the different supporting systems can be opened. The displacement monitoring meter is used for monitoring the segment slab staggering amount and the segment opening amount between the shield segments; and the structure size control system is used for expanding the supporting bed so that the supporting system can bear shield segments with different pipe diameters, and meanwhile, the invention further provides a shield segment testing method based on the testing device.

Description

technical field [0001] The present disclosure relates to the technical field of tunnel engineering equipment, and in particular to a test device and a test method applicable to shield segments of different sizes to realize staggering and opening. Background technique [0002] In recent years, shield tunnels have shown a trend of increasing burial depth, increasing length, and increasing and diversifying cross-sections, which have sharply increased the external loads such as soil-water pressure and construction loads acting on the lining of shield tunnels, resulting in the generation of segments. Different degrees of wrong platform and opening, the existence of wrong platform and opening will have a great impact on the safety of the tunnel. At present, in view of the large staggering and opening (beyond the limit) of the local segment of the shield tunnel, it is difficult to determine the safety impact of the staggering and opening on the local damage of the segment, the stre...

AI Technical Summary

Problems solved by technology

[0003] The following problems exist in the traditional shield segment fault test device: the existing relevant test device is mainly based on the scale test. Although the scale test can reveal the relevant mechanism, it cannot completely restore the real situation of the segment damage in the project; research For segments with different diameters, it is necessary to design test devices of different sizes, which is not convenient and economical, and it is difficult to adapt to shield segments of different sizes in the project; the existing related test devices can only be studied for segment ring joints or ring joints , it is not possible to conduct research on the inner and interannulus seams of the segments at the same time

The above problems have certain influence on the accurate research on the structure development of shield tunneling under the condition of segment staggered opening and exceeding the limit.

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